<!DOCTYPE html>
<!-- saved from url=(0030)http://www.jq22.com/js/a2.html -->
<html><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8">

<title>jq22-code2</title>
<style>
html{ background: black;}
body { width: 100%; height: 100%; position: absolute; left: 0; top: 0; overflow: hidden; margin: 0; background: black; -webkit-filter: invert(0); filter: invert(0); }
#canvas { position: absolute; z-index: -1; -webkit-filter: hue-rotate(100deg) brightness(1); filter: hue-rotate(100deg) brightness(1); mix-blend-mode: difference; }
#canv { position: absolute; z-index: -2; mix-blend-mode: lighter; }
canvas { position: absolute; top: 50%; left: 50%; z-index: -1; -webkit-transform: translate(-50%, -50%); transform: translate(-50%, -50%); }
</style>
</head>

<body>
<canvas id="canvas" height="400" width="400"></canvas>
<canvas id="canv" width="1920" height="935"></canvas>
<script>
var c = document.getElementById('canv'),
 $ = c.getContext('2d'),
 w = c.width = window.innerWidth,
 h = c.height = window.innerHeight,
 t = 0,
 num = 950,
 s, a, b, u = 0,
 x, y, _x, _y,
 _t = 1 / 16;

function random(min, max) {
 return Math.random() * (max - min) + min;
}

var anim = function() {
 $.globalCompositeOperation = 'multiply';
 $.fillStyle = 'hsla(258,20%,50%,1)';
 $.fillRect(0, 0, w, h);
 $.globalCompositeOperation = 'lighter';
 for (var i = 0; i < .5; i++) {
  x = 0;
  _u = (u) + i * 2, col = u + (_u * 8);
  $.beginPath();
  for (var j = 0; j < num; j++) {
   x -= .312 * Math.sin(15);
   y = x * Math.sin(i + 3.05 * t + x / 7) / 12;
   _x = x * Math.cos(b) + y * Math.sin(b);
   _y = x * Math.sin(b) - y * Math.cos(b);
   b = (j * 2.1102) * Math.PI / -.1008;
   $.arc(w / 2 - _x, h / 2 - _y, random(.001, .6), 300, Math.PI * 2 + .1);
   $.lineWidth = .2;
  }
  var g = $.createLinearGradient(w / 2 + _x, h / 2 + _y,
   1, w / 2 + _x, h / 2 + _y);
  g.addColorStop(0.2, 'hsla(' + col + ',90%,50%,.2)');
  g.addColorStop(0.9, 'hsla(' + _u + ',95%,50%,.3)');
  g.addColorStop(1, 'hsla(0,0%,100%,.4)');
  $.strokeStyle = g;
  $.stroke();
 }
 t += _t / 2;
 u -= .2;
 window.requestAnimationFrame(anim);
};
anim();

window.addEventListener('resize', function() {
 c.width = w = window.innerWidth;
 c.height = h = window.innerHeight;
}, false);

var canvas, ctx, tim;
canvas = document.getElementsByTagName('canvas')[0];
ctx = canvas.getContext('2d');
canvas.width = canvas.height = 400;
baum();

function baum() {
 var a, b, c, d, e, x, y, r;
 ctx.globalCompositeOperation = "source-over";
 ctx.fillStyle = "hsla(26,100%,0%,1)";
 ctx.fillRect(0, 0, canvas.width, canvas.height);
 ctx.globalCompositeOperation = "color-burn";
 tim = new Date().getTime() / Math.PI / 72;

 c = [];
 r = tim / 32;
 for (a = 0; a < 18; a++) {
  b = 160;
  if (a % 2 == 1) b = 100;
  x = Math.cos(r) * b;
  y = Math.sin(r) * b;
  c.push([200 + x, 200 + y]);
  r += Math.PI * 2 / 14;
 }

 for (a = 0; a < 7; a++) {
  b = c[a * 2];
  d = c[a * 2 + 1];
  e = c[(a * 2 + 13) % 14];
  tri([
   [200, 200], b, d
  ], 0);
  tri([
   [200, 200], b, e
  ], 0);
 }
 requestAnimationFrame(baum);
}

function tri(p, ban) {
 var a, b, c, d, e, f, x, y, han, r1, r2;
 x = y = 0;
 for (a = 0; a < 3; a++) {
  x += p[a][0];
  y += p[a][1];
 }
 x = x / 3 - canvas.width / 2;
 y = y / 3 - canvas.height / 2;
 han = Math.pow(x * x + y * y, 0.5);
 c = 0.2 + Math.sin(tim / 13) * 0.15;
 r1 = 0.5 + Math.sin(han / 20 * (1 + Math.sin(tim / 19) * 0.7) + tim / 41) * c;
 r2 = 1 - r1;
 c = p[0][0] * (p[1][1] - p[2][1]);
 c += p[1][0] * (p[2][1] - p[0][1]);
 c += p[2][0] * (p[0][1] - p[1][1]);
 c = Math.abs(c);

 if (c < 100) {
  if (ban % 17 == 1) {
   a = ((han + tim * 3) % 360) | 0;
   b = 0.4;
   if (ban % 12 > 8) b = 1;

   ctx.fillStyle = ctx.strokeStyle = "hsla(" + a * 2 + ",60%,40%,0.53)";
   ctx.beginPath();
   for (a = 0; a < p.length; a++) {
    b = p[a];
    ctx.globalCompositeOperation = "lighter";
    ctx.lineTo(b[0], b[1]);
   }
   ctx.fill();
   if (Math.random() < 0.2) return;
  }
  if (ban % 50 > 28) return;
  if (c < 20) return;
 }

 d = 0;
 for (a = 0; a < p.length; a++) {
  b = p[a];
  c = p[(a + 1) % p.length];
  x = b[0] - c[0];
  y = b[1] - c[1];
  e = Math.pow(x * x + y * y, 0.5);
  if (e > d) {
   d = e;
   f = a;
  }
 }

 a = p[f];
 b = p[(f + 1) % p.length];
 c = p[(f + 2) % p.length];
 x = a[0] * r1 + b[0] * r2;
 y = a[1] * r1 + b[1] * r2;
 tri([b, c, [x, y]], ban + 1);
 tri([c, a, [x, y]], ban + 2);
}
</script>


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